# 作   者: 刘自涵
# 创建时间: 2022/3/23 8:49

print('p' in 'python')  # True
print('k' not in 'python')  # True

lst = [10, 20, 'python', 'hello']
print(10 in lst)  # True
print(100 in lst)  # False
print(10 not in lst)  # False
print(100 not in lst)  # True
print('--------------------------------')
for item in lst:
    print(item)
